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zaharov [31]
3 years ago
10

the table shows the number of students in 4 classes. the teachers are combining the classes and dividing the students in half to

form two groups for a project. write an expression to represent this situation. how many students are in each group

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0
(24+32+30+28) ÷ 2

Solving:
114 ÷ 2
57 students in each group
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3. if kx² + 2x + k = -kx have equal roots, find the values of k.<br>​
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Answer:

k = - \frac{2}{3} , k = 2

Step-by-step explanation:

Using the discriminant Δ = b² - 4ac

The condition for equal roots is b² - 4ac = 0

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5 0
3 years ago
if the 300 inspected light bulbs represent 20% of an hour's total production of light bulbs, how many light bulbs are produced i
KIM [24]
Hi there! 
So to get this we just need to multiply 300 by 5 because it is 1/5 of the hour work. 300 x 5 = 1500 light bulbs. Hope this helps!


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3 years ago
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